The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Spectroscopic study of Planetary hosting star HD 20794

  • Rittipruk, Pakakaew (Department of Astronomy and Space Science, Sejong University) ;
  • Yushchenko, Alexander V. (Department of Astronomy and Space Science, Sejong University) ;
  • Kang, Young-Woon (Department of Astronomy and Space Science, Sejong University)
  • Published : 2016.04.12
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Abstract

We observed the high resolution spectra of a solar-neighborhood planetary hosting star HD 20794. The analysis of spectroscopic data was performed using URAN and SYNTHE programs. These spectra allow us to determine the effective temperatures, surface gravities, microturbulent velocities and, chemical abundances. Bond et al. (2008) found chemical abundance for 11 elements, but using the Spectrum synthesis method we have so far determine about 30 elements. We have derived iron metallicity $[FeI/H]=-0.42{\pm}0.03$, $[FeII/H]=-0.43{\pm}0.012$, and surface gravity, log g = 4.48, in good agreement with values from previous investigation.

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